GB767888A - Method of and materials for the surface treatment of aluminium and its alloys - Google Patents

Method of and materials for the surface treatment of aluminium and its alloys

Info

Publication number
GB767888A
GB767888A GB4812/55A GB481255A GB767888A GB 767888 A GB767888 A GB 767888A GB 4812/55 A GB4812/55 A GB 4812/55A GB 481255 A GB481255 A GB 481255A GB 767888 A GB767888 A GB 767888A
Authority
GB
United Kingdom
Prior art keywords
acid
solution
compounds
aluminium
fluorine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4812/55A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henkel Corp
Original Assignee
Amchem Products Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Amchem Products Inc filed Critical Amchem Products Inc
Publication of GB767888A publication Critical patent/GB767888A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
    • C23C22/37—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also hexavalent chromium compounds

Abstract

The corrosion resistance of an aluminium or aluminium-base alloy surface is increased by treatment with an aqueous acid solution comprising one or more hexavalent chromium compounds and one or more soluble complex fluorine-bearing compounds, the amount of hexavalent chromium compounds being 0.4-4 grams/litre calculated as CrO3 and the amount of fluorine-bearing compounds being 0.1-1.0 gram/litre calculated as fluorine, and the pH of the solution being from 2-4, the solution being free from ions (other than the ions of the chromium and complex fluorine compounds) capable of forming a coating on aluminium and containing at most only traces of other halide ions. The hexavalent chromium compound may be chromium acid or its soluble salts such as ammonium dichorate, potassium dichromate and sodium chromate and the complex fluorine-bearing compound may be fluosilicic acid, fluoboric acid, fluozirconic acid, fluostannic acid, fluotitanic acid or a soluble salt thereof. The article to be treated may be immersed in the solution, sprayed therewith or may be wiped with a cloth dampened with the solution. Compositions given by way of example contain (a) chromic acid and potassium titanium fluoride. Specifications 632,090, 673,677, 708,937 and 714,541 are referred to.
GB4812/55A 1954-08-05 1955-02-17 Method of and materials for the surface treatment of aluminium and its alloys Expired GB767888A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US448164A US2825697A (en) 1954-08-05 1954-08-05 Method of and solution for the surface treatment of aluminum

Publications (1)

Publication Number Publication Date
GB767888A true GB767888A (en) 1957-02-06

Family

ID=23779256

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4812/55A Expired GB767888A (en) 1954-08-05 1955-02-17 Method of and materials for the surface treatment of aluminium and its alloys

Country Status (5)

Country Link
US (1) US2825697A (en)
BE (1) BE538540A (en)
DE (1) DE973261C (en)
FR (1) FR1119649A (en)
GB (1) GB767888A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1194675B (en) * 1957-08-19 1965-06-10 Metallgesellschaft Ag Process for applying coatings to aluminum
DE1290410B (en) * 1963-11-12 1969-03-06 Pennsalt Chemicals Corp Aqueous, acidic fluoride ions and an inorganic inhibitor containing solution, which is practically free of chloride ions, and processes for cleaning aluminum and aluminum alloys

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3062748A (en) * 1959-08-24 1962-11-06 Dow Chemical Co Inhibited aqueous acidic composition
NL258036A (en) * 1959-11-19
US3098775A (en) * 1961-08-09 1963-07-23 Amchem Prod Method of applying a chromate conversion coating to the surface of aluminum
US3342601A (en) * 1964-02-27 1967-09-19 Eastman Kodak Co Lithographic printing plate
US4273592A (en) * 1979-12-26 1981-06-16 Amchem Products, Inc. Coating solution for metal surfaces
US5129967A (en) * 1988-05-03 1992-07-14 Betz Laboratories, Inc. Composition and method for non-chromate coating of aluminum
US5219617A (en) * 1989-09-19 1993-06-15 Michigan Chrome And Chemical Company Corrosion resistant coated articles and process for making same
US5769967A (en) * 1992-04-01 1998-06-23 Henkel Corporation Composition and process for treating metal
US5702759A (en) * 1994-12-23 1997-12-30 Henkel Corporation Applicator for flowable materials
US20070125451A1 (en) * 2005-01-14 2007-06-07 Smith Steven R Stable, thin-film organic passivates
PT1870489E (en) * 2006-04-19 2008-09-30 Ropal Ag Method to obtain a corrosion-resistant and shiny substrate
DE102007046925A1 (en) 2007-09-28 2009-04-09 Ropal Ag Method for producing a metallic and/or non-metallic substrate, which is protected against corrosion in regions and/or is shiny, comprises provisioning a substrate or a carrier layer having a surface, which is coated in regions
EP2123366A1 (en) 2008-05-23 2009-11-25 Mattthias Koch Coated substrate and method for its production
EP2752504B1 (en) 2013-01-08 2016-04-06 ROPAL Europe AG Method for producing a corrosion resistant, glossy, metallic coated substrate, the metallic coated substrate, and its use
ES2663507T3 (en) 2015-07-13 2018-04-13 Hec High End Coating Gmbh Procedure for manufacturing coated substrates
EP3228727A3 (en) 2016-03-30 2018-01-24 HEC High End Coating GmbH Method for the production of coated substrates, coated substrates, and their use

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2563431A (en) * 1951-08-07 Method of improving the resistance
US2499231A (en) * 1944-08-25 1950-02-28 United Chromium Inc Method of producing surface conversion coatings on zinc
BE467610A (en) * 1945-06-30
NL147273B (en) * 1948-07-12 1900-01-01 Amp Inc TERMINAL FOR CLAMPING A CABLE IN AN OPENING IN A PANEL, MADE OF HEAT-SHRINKING PLASTIC TO BE SUPPLIED.
US2568936A (en) * 1949-12-14 1951-09-25 American Chem Paint Co Method of improving the resistance to corrosion and abrasion of certain coated aluminum surfaces
US2727841A (en) * 1950-11-30 1955-12-20 Poor & Co Method and composition for improving corrosion resistance of zinc
US2762731A (en) * 1952-03-29 1956-09-11 American Chem Paint Co Method of and materials for producing paint bonding films on ferriferous metal surfaces
US2655439A (en) * 1952-12-15 1953-10-13 Ryan Aeronautical Co Compounded fluoborate chemical surface treatment of aluminum and aluminum alloys
US2798829A (en) * 1953-08-04 1957-07-09 American Chem Paint Co Process for enhancing the corrosion resistance of certain coated aluminum surfaces
US2798830A (en) * 1953-08-04 1957-07-09 American Chem Paint Co Method of improving the corrosion resistance of certain coated aluminum surfaces

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1194675B (en) * 1957-08-19 1965-06-10 Metallgesellschaft Ag Process for applying coatings to aluminum
DE1290410B (en) * 1963-11-12 1969-03-06 Pennsalt Chemicals Corp Aqueous, acidic fluoride ions and an inorganic inhibitor containing solution, which is practically free of chloride ions, and processes for cleaning aluminum and aluminum alloys
DE1290410C2 (en) * 1963-11-12 1974-05-30 Pennsalt Chemicals Corp AQUATIC, ACID FLUORIDE IONS AND AN INORGANIC INHIBITOR CONTAINING SOLUTION, PRACTICALLY FREE OF CHLORIDIONS, AND METHOD FOR PURIFYING ALUMINUM AND ALUMINUM ALLOYS

Also Published As

Publication number Publication date
BE538540A (en)
US2825697A (en) 1958-03-04
DE973261C (en) 1959-12-31
FR1119649A (en) 1956-06-22

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